Carbon County, MT Water Table Trend
Carbon County, MT: the closest actual trend
The closest qualifying well to Carbon County is 61 miles away in Yellowstone County, MT, where the trend runs declining at a typical pace for a declining county.
Carbon County itself has no monitoring well with enough history to call its own trend, so treat this as a regional estimate, not Carbon County's own number. If you own a well here, comparing your own depth log against this regional figure is worth doing before assuming either way. See Yellowstone County, MT's full page. See the no-data guide for why a county this close to a qualifying well still doesn't get its own number.
Carbon County, Montana in brief
About 11,498 people live across Carbon County's 2,048 square miles, in Montana. USGS's National Groundwater Monitoring Network covers 1,449 of 3,222 US counties (45%) today; Carbon County isn't one of them yet, see the methodology guide for the exact qualifying bar.